Definition: for all real numbers a, b, and c: if a=b, then a + c = b + c. this is the of equality. what’s the correct term

How do you solve a question like this?

Find the missing factor. write your answer inexponential form.9^2=9^4×

Maci and i are making a small kite. two sides are 10". two sides are 5". the shorter diagonal is 6". round all your answers to the nearest tenth. 1. what is the distance from the peak of the kite to the intersection of the diagonals? 2. what is the distance from intersection of the diagonals to the top of the tail? 3. what is the length of the longer diagonal?